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I need to feed 4 DC motors of 5V on my Raspberry Pi 3 Model B using PWM (Pulse Width Modulation).

Currently, I have the next components: 2 NPM transistors, 1 L293D integrated circuit, resistors (220 Ohms), wires, etc.

My question is, what is the correct way to feed the 4 motors with 4 GPIO pins?

I will appreciate any kind of help.

circuit diagram circuit diagram

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  • All you need are two L293D. Each contains the electronics needed to safely drive 2 DC motors. Plenty of tutorials if you search. I would check they can provide enough current for your motors.
    – joan
    Jun 13, 2020 at 12:15
  • Thanks @joan, so with 2 l293d i could feed 4 motors safely using 5V of Raspberry pi¿ i fear to burn my gpio if it is not enough
    – Alberto Bricio
    Jun 13, 2020 at 12:27
  • @joan as you can see in the diagram, i have already controlled 1 motor with 1 NPN transistor, could i use 2 npm transistors instead of l293d? Thanks for your help
    – Alberto Bricio
    Jun 13, 2020 at 12:33
  • @joan using 2 l293d with Vmotor=9V works, nevertheless after some seconds running the motor stops... It seems that l293d are overheated. So it seems to be a bad solution
    – Alberto Bricio
    Jul 5, 2020 at 18:11

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